CN115499078B - Novel broadcast single-frequency network networking method, system, medium and terminal - Google Patents

Novel broadcast single-frequency network networking method, system, medium and terminal Download PDF

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CN115499078B
CN115499078B CN202210936706.3A CN202210936706A CN115499078B CN 115499078 B CN115499078 B CN 115499078B CN 202210936706 A CN202210936706 A CN 202210936706A CN 115499078 B CN115499078 B CN 115499078B
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broadcast
broadcasting
transmitting tower
auxiliary
signal
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CN115499078A (en
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杨昉
常琳惠
彭克武
张顺磊
宋健
薛永林
王军
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Peng Cheng Laboratory
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Peng Cheng Laboratory
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/71—Wireless systems
    • H04H20/72—Wireless systems of terrestrial networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/38—Arrangements for distribution where lower stations, e.g. receivers, interact with the broadcast
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a novel broadcast single-frequency network networking method, a system, a medium and a terminal, wherein the method comprises the steps that a main broadcast transmitting tower obtains broadcast service information and physical layer sub-channel information from a core network, and the main broadcast transmitting tower distributes corresponding broadcast physical layer sub-channels for broadcast services based on broadcast signaling information and broadcast physical layer sub-channel information in the broadcast service information; the main broadcasting transmitting tower generates physical layer sub-channel signals based on the broadcasting signaling information and the broadcasting physical layer sub-channels, and superimposes different physical layer sub-channel signals to generate main broadcasting transmitting tower broadcasting signals and transmits the main broadcasting transmitting tower broadcasting signals; the auxiliary broadcasting transmitting tower obtains a transmission signal from a main broadcasting transmitting tower or a core network, and generates and transmits an auxiliary broadcasting transmitting tower broadcasting signal based on the transmission signal; the invention can carry out heterogeneous fusion and joint networking among a plurality of broadcast transmitting towers, thereby realizing broadcast service differentiation service and improving the deep coverage of the handheld terminal.

Description

Novel broadcast single-frequency network networking method, system, medium and terminal
Technical Field
The invention relates to the field of broadcast single frequency networks, in particular to a novel broadcast single frequency network networking method, a novel broadcast single frequency network networking system, a novel broadcast single frequency network networking medium and a novel broadcast single frequency network networking terminal.
Background
Along with the popularization of intelligent mobile terminal equipment, how to quickly and efficiently spread public information to make strong mainstream public opinion and realize the functions of providing regional differentiated broadcasting services with low cost and high quality for intelligent mobile terminal users and the like, the novel challenges are presented to the traditional broadcasting network. The traditional digital broadcasting network generally adopts a single-frequency network transmitting mode for transmitting the same signal at the same time and same frequency, so that the information differentiation requirements among users in different areas are difficult to meet, and the high-spectrum efficiency large-range deep coverage of the broadcasting signal to the intelligent mobile terminal cannot be realized.
Conventional digital television broadcast transmission systems generally employ a relatively high tower to provide wide-area broadcast high-power signal coverage, and are generally oriented to terminal devices such as rooftop antennas that have relatively high antenna gain and relatively good reception conditions. In the mobile communication network, the receiving terminal is complex in type, and has the characteristics of strong equipment mobility, complex and diverse receiving environments, poor receiving conditions, low receiving antenna gain and the like. Therefore, it is difficult to achieve deep coverage of broadcast signals to handheld terminals using only wide area broadcast networks constructed using large towers (or satellites) of conventional digital terrestrial broadcast transmission systems.
Aiming at the broadcasting requirement in mobile communication, 3GPP proposes an LTE-based 5G terrestrial broadcasting (enTV) evolution scheme which adopts an orthogonal multiplexing technology and performs single-service broadcasting service based on a broadcasting single-frequency network consisting of transmitting towers which simultaneously transmit the same signal in the same frequency. However, the scheme is difficult to realize the functional characteristics of signal isomerism, can not meet the regional differentiation requirement of broadcast information, and lacks the capability of deep coverage of the handheld terminal.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present application is to provide a novel broadcast single frequency network networking method, system, medium and terminal, which aims to solve the problem of how to meet the regional differentiation requirement of broadcast information and to deeply cover a handheld terminal.
In order to solve the above technical problems, a first aspect of an embodiment of the present application provides a novel broadcast single frequency network networking method, where the method includes:
a novel broadcast single frequency network networking method, which is applied to a novel broadcast single frequency network networking system, wherein the system comprises a core network, at least one main broadcast transmitting tower and at least one auxiliary broadcast transmitting tower, each main broadcast transmitting tower corresponds to each auxiliary broadcast transmitting tower, and the method comprises the following steps:
The main broadcasting transmitting tower obtains broadcasting service information and physical layer sub-channel information from the core network, and allocates corresponding broadcasting physical layer sub-channels for broadcasting services based on broadcasting signaling information in the broadcasting service information and the broadcasting physical layer sub-channel information, wherein the broadcasting service information comprises basic layer broadcasting service information and enhancement layer broadcasting service information, the basic layer broadcasting service information obtained by different main broadcasting transmitting towers is consistent, and the enhancement layer broadcasting service information obtained by different main broadcasting transmitting towers can be inconsistent;
the main broadcasting transmitting tower generates physical layer sub-channel signals based on the broadcasting signaling information and the broadcasting physical layer sub-channels, superimposes different physical layer sub-channel signals to generate main broadcasting transmitting tower broadcasting signals, and transmits the main broadcasting transmitting tower broadcasting signals;
the auxiliary broadcast transmitting tower obtains a transmission signal from the main broadcast transmitting tower or the core network, generates an auxiliary broadcast transmitting tower broadcast signal based on the transmission signal, and transmits the auxiliary broadcast transmitting tower broadcast signal.
As a further improved technical solution, the main broadcast transmitting tower obtains broadcast service information and physical layer subchannel information from the core network, and the main broadcast transmitting tower allocates a corresponding broadcast physical layer subchannel for a broadcast service based on broadcast signaling information in the broadcast service information and the broadcast physical layer subchannel information, including:
The main broadcast transmitting tower obtains broadcast service information and physical layer sub-channel information from the core network, wherein the physical layer sub-channel information comprises a first physical layer sub-channel for facing a handheld terminal and a second physical layer sub-channel for facing local fixed reception;
the main broadcast transmitting tower allocates a corresponding broadcast physical layer sub-channel for the broadcast service based on the broadcast signaling information and the broadcast physical layer sub-channel information in the broadcast service information, wherein the broadcast signaling information comprises base layer broadcast signaling information and enhancement layer broadcast signaling information, the base layer broadcast signaling information corresponds to the base layer broadcast service, the enhancement layer broadcast signaling information corresponds to the enhancement layer broadcast service, the main broadcast transmitting tower allocates a first physical layer sub-channel for the base layer broadcast service, and the main broadcast transmitting tower allocates a second physical layer sub-channel for the enhancement layer broadcast service.
As a further improved technical solution, the main broadcast transmitting tower generates physical layer subchannel signals based on the broadcast signaling information and the broadcast physical layer subchannel, and superimposes different physical layer subchannel signals to generate a main broadcast transmitting tower broadcast signal, and transmitting the main broadcast transmitting tower broadcast signal includes:
The main broadcasting transmitting tower encodes, modulates and frames the base layer broadcasting service information according to a broadcasting protocol based on the base layer broadcasting signaling information, and generates a base layer broadcasting signal after being adapted to a first physical layer sub-channel;
the main broadcasting transmitting tower encodes, modulates and frames the enhancement layer broadcasting service information according to a broadcasting protocol based on the enhancement layer broadcasting signaling information, and generates an enhancement layer broadcasting signal after being adapted to a second physical layer sub-channel;
and the main broadcasting transmitting tower generates a main broadcasting transmitting tower broadcasting signal by adopting a direct superposition or nonlinear superposition mode for the base layer broadcasting signal and the enhancement layer broadcasting signal, and transmits the main broadcasting transmitting tower broadcasting signal.
As a further improved technical solution, the generating, by the main broadcasting transmission tower, the main broadcasting transmission tower broadcasting signal by directly superposing the base layer broadcasting signal and the enhancement layer broadcasting signal includes:
the main broadcasting transmitting tower distributes power with the proportion of a to the base layer broadcasting signals based on the broadcasting signaling information, the main broadcasting transmitting tower distributes power with the proportion of 1-a to the enhancement layer broadcasting signals, and the base layer broadcasting signals and the enhancement layer broadcasting signals are directly overlapped to generate the main broadcasting transmitting tower broadcasting signals.
As a further improved technical solution, the main broadcasting transmitting tower generates a main broadcasting transmitting tower broadcasting signal by a nonlinear superposition manner for a base layer broadcasting signal and an enhancement layer broadcasting signal, and transmitting the main broadcasting transmitting tower broadcasting signal includes:
the main broadcasting transmitting tower adopts a nonlinear superposition mode to modulate the base layer broadcasting signal and the enhancement layer broadcasting signal into a composite signal, and the composite signal is used as the main broadcasting transmitting tower broadcasting signal.
As a further improved technical solution, the auxiliary broadcasting transmission tower obtains a transmission signal from the main broadcasting transmission tower, generates an auxiliary broadcasting transmission tower broadcasting signal based on the transmission signal, and transmits the auxiliary broadcasting transmission tower broadcasting signal including:
the auxiliary broadcasting transmitting tower receives the main broadcasting transmitting tower broadcasting signal transmitted by the main broadcasting transmitting tower;
the auxiliary broadcast transmitting tower generates an auxiliary broadcast transmitting tower broadcast signal by adopting an amplifying and forwarding or low-delay decoding and forwarding mode, and transmits the auxiliary broadcast transmitting tower broadcast signal.
As a further improved technical solution, the auxiliary broadcast transmitting tower obtains a transmission signal from a core network, generates an auxiliary broadcast transmitting tower broadcast signal based on the transmission signal, and transmits the auxiliary broadcast transmitting tower broadcast signal, including:
The auxiliary broadcast transmitting tower obtains the same physical layer sub-channel information and broadcast service information as the corresponding main broadcast transmitting tower from a core network;
the auxiliary broadcast transmitting tower encodes, modulates and frames the basic layer broadcast service information according to a broadcast protocol, and generates a basic layer broadcast signal after adapting to a first physical layer sub-channel;
the auxiliary broadcast transmitting tower selects the enhancement layer broadcast service information or part of enhancement layer broadcast service information to encode, modulate and frame according to a broadcast protocol, and generates enhancement layer broadcast signals of the auxiliary broadcast transmitting tower after being adapted to a second physical layer sub-channel;
the auxiliary broadcast transmitting tower transmits the basic layer broadcast signal as an auxiliary broadcast transmitting tower broadcast signal or the auxiliary broadcast transmitting tower superimposes the basic layer broadcast signal and the enhancement layer broadcast signal of the auxiliary broadcast transmitting tower to generate an auxiliary broadcast transmitting tower broadcast signal and transmits the auxiliary broadcast transmitting tower broadcast signal.
As a further improved technical solution, the auxiliary broadcast transmitting tower generates an auxiliary broadcast transmitting tower broadcast signal by adopting a low-delay decoding forwarding mode, and transmitting the auxiliary broadcast transmitting tower broadcast signal includes:
the auxiliary broadcast transmitting tower uses a low-delay decoding method, and completely decodes the main broadcast transmitting tower broadcast signal according to the channel condition of the auxiliary broadcast transmitting tower to obtain the basic layer broadcast service information and the enhancement layer broadcast service information, and the auxiliary broadcast transmitting tower can select to delete the enhancement layer broadcast service information to obtain the whole set or subset of the enhancement layer broadcast service information;
The auxiliary broadcast transmitting tower carries out code modulation on the whole set or subset of the basic layer broadcast service information and the enhancement layer broadcast service information to obtain an auxiliary broadcast transmitting tower broadcast signal;
the auxiliary broadcast transmitting tower transmits the auxiliary broadcast transmitting tower broadcast signal.
As a further improved technical solution, the auxiliary broadcast transmitting tower generates an auxiliary broadcast transmitting tower broadcast signal by adopting a low-delay decoding forwarding mode, and transmitting the auxiliary broadcast transmitting tower broadcast signal includes:
the auxiliary broadcast transmitting tower uses a low-delay decoding method to partially decode the broadcast signal of the main broadcast transmitting tower according to the channel condition of the auxiliary broadcast transmitting tower and obtain the basic layer broadcast service information;
the auxiliary broadcast transmitting tower carries out code modulation on the basic layer broadcast service information to obtain an auxiliary broadcast transmitting tower broadcast signal;
the auxiliary broadcast transmitting tower transmits the auxiliary broadcast transmitting tower broadcast signal.
As a further improved technical solution, the nonlinear superposition method is a mud_type2 method or a bit division multiplexing method.
The second aspect of the embodiment of the present application provides a novel broadcast single-frequency network networking system, which includes a core network, at least one main broadcast transmitting tower and at least one auxiliary broadcast transmitting tower, where each main broadcast transmitting tower corresponds to each auxiliary broadcast transmitting tower, the main broadcast transmitting tower is connected with the core network, and the auxiliary broadcast transmitting tower can be connected with the corresponding main broadcast transmitting tower or the auxiliary broadcast transmitting tower is connected with the core network;
The main broadcast transmitting tower is used for obtaining broadcast service information and physical layer sub-channel information from the core network, distributing corresponding broadcast physical layer sub-channels for broadcast service based on broadcast signaling information in the broadcast service information and the broadcast physical layer sub-channel information, generating physical layer sub-channel signals based on the broadcast signaling information and the broadcast physical layer sub-channels, superposing different physical layer sub-channel signals to generate main broadcast transmitting tower broadcast signals, and transmitting the main broadcast transmitting tower broadcast signals;
the auxiliary broadcast transmitting tower is used for obtaining a transmission signal from the main broadcast transmitting tower or the core network, generating an auxiliary broadcast transmitting tower broadcast signal based on the transmission signal, and transmitting the auxiliary broadcast transmitting tower broadcast signal.
A third aspect of the embodiments of the present application provides a computer readable storage medium storing one or more programs executable by one or more processors to implement steps in a novel broadcast single frequency network networking method as described in any of the above.
A fourth aspect of the present embodiment provides a terminal device, including: a processor, a memory, and a communication bus; the memory has stored thereon a computer readable program executable by the processor;
The communication bus realizes connection communication between the processor and the memory;
the steps in the novel broadcast single frequency network networking method according to any one of the above are implemented when the processor executes the computer readable program.
The beneficial effects are that: compared with the prior art, the novel broadcast single-frequency network networking method comprises the steps that the main broadcast transmitting tower obtains broadcast service information and physical layer sub-channel information from the core network, and the main broadcast transmitting tower distributes corresponding broadcast physical layer sub-channels for broadcast services based on broadcast signaling information in the broadcast service information and the broadcast physical layer sub-channel information, wherein the broadcast service information comprises base layer broadcast service information and enhancement layer broadcast service information, the base layer broadcast service information obtained by different main broadcast transmitting towers is consistent, and the enhancement layer broadcast service information obtained by different main broadcast transmitting towers can be inconsistent; the main broadcasting transmitting tower generates physical layer sub-channel signals based on the broadcasting signaling information and the broadcasting physical layer sub-channels, superimposes different physical layer sub-channel signals to generate main broadcasting transmitting tower broadcasting signals, and transmits the main broadcasting transmitting tower broadcasting signals; the auxiliary broadcast transmitting tower obtains a transmission signal from the main broadcast transmitting tower or a core network, generates an auxiliary broadcast transmitting tower broadcast signal based on the transmission signal, and transmits the auxiliary broadcast transmitting tower broadcast signal; by adopting the method, the heterogeneous fusion and the joint networking can be carried out among a plurality of broadcast transmitting towers, so that the differentiated service of the broadcast service and the improvement of the deep coverage of the handheld terminal are realized.
Drawings
Fig. 1 is a flowchart of a novel broadcast single frequency network networking method of the present invention.
Fig. 2 is a schematic structural diagram of a terminal device provided by the present invention.
Fig. 3 is a block diagram of a system structure provided by the present invention.
Fig. 4 is a schematic diagram of an embodiment provided by the present invention.
Fig. 5 is a schematic diagram of a second embodiment provided by the present invention.
Fig. 6 is a schematic diagram of a third embodiment provided by the present invention.
Fig. 7 is a fourth schematic diagram of an embodiment provided by the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The inventors have found that the following problems exist in the prior art:
(1) Conventional digital television broadcast transmission systems generally employ a relatively high tower to provide wide-area broadcast high-power signal coverage, and are generally oriented to terminal devices such as rooftop antennas that have relatively high antenna gain and relatively good reception conditions. In the mobile communication network, the receiving terminal is complex in type, and has the characteristics of strong equipment mobility, complex and diverse receiving environments, poor receiving conditions, low receiving antenna gain and the like. Therefore, it is difficult to achieve deep coverage of broadcast signals to handheld terminals using only wide area broadcast networks constructed using large towers (or satellites) of conventional digital terrestrial broadcast transmission systems.
In order to solve the above problems, various non-limiting embodiments of the present application are described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the novel broadcast single frequency network networking method provided in the embodiment of the present application is applied to a novel broadcast single frequency network networking system, where the system includes a core network, at least one main broadcast transmitting tower and at least one auxiliary broadcast transmitting tower, where each main broadcast transmitting tower corresponds to each auxiliary broadcast transmitting tower, and the method includes the following steps:
S1, the main broadcasting transmitting tower obtains broadcasting service information and physical layer sub-channel information from the core network, and allocates corresponding broadcasting physical layer sub-channels for broadcasting services based on broadcasting signaling information in the broadcasting service information and the broadcasting physical layer sub-channel information, wherein the broadcasting service information comprises basic layer broadcasting service information and enhancement layer broadcasting service information, the basic layer broadcasting service information obtained by different main broadcasting transmitting towers is consistent, and the enhancement layer broadcasting service information obtained by different main broadcasting transmitting towers can be inconsistent;
s2, the main broadcasting transmitting tower generates physical layer sub-channel signals based on the broadcasting signaling information and the broadcasting physical layer sub-channels, and superimposes different physical layer sub-channel signals to generate a main broadcasting transmitting tower broadcasting signal and transmits the main broadcasting transmitting tower broadcasting signal;
and S3, the auxiliary broadcasting transmitting tower obtains a transmission signal from the main broadcasting transmitting tower or the core network, generates an auxiliary broadcasting transmitting tower broadcasting signal based on the transmission signal, and transmits the auxiliary broadcasting transmitting tower broadcasting signal.
Embodiment one:
The main broadcast transmitting tower obtains broadcast service information and physical layer sub-channel information from the core network, and allocates a corresponding broadcast physical layer sub-channel for a broadcast service based on broadcast signaling information in the broadcast service information and the broadcast physical layer sub-channel information, comprising the steps of:
s101, the main broadcast transmitting tower obtains broadcast service information and physical layer sub-channel information from the core network, wherein the physical layer sub-channel information comprises a first physical layer sub-channel for facing a handheld terminal and a second physical layer sub-channel for facing local fixed reception;
s102, the main broadcast transmitting tower allocates corresponding broadcast physical layer sub-channels for the broadcast service based on the broadcast signaling information and the broadcast physical layer sub-channel information in the broadcast service information, wherein the broadcast signaling information comprises base layer broadcast signaling information and enhancement layer broadcast signaling information, the base layer broadcast signaling information corresponds to the base layer broadcast service, the enhancement layer broadcast signaling information corresponds to the enhancement layer broadcast service, the main broadcast transmitting tower allocates first physical layer sub-channels for the base layer broadcast service, and the main broadcast transmitting tower allocates second physical layer sub-channels for the enhancement layer broadcast service.
Specifically, the broadcast service is divided into a base layer broadcast service and an enhancement layer broadcast service, the broadcast service information includes base layer broadcast service information, enhancement layer broadcast service information, base layer broadcast signaling information and enhancement layer broadcast signaling information, the base layer broadcast service information corresponds to the base layer broadcast signaling information, the enhancement layer broadcast service information corresponds to the enhancement layer broadcast signaling information, the physical layer sub-channel information includes a first physical layer sub-channel for facing the handheld terminal and a second physical layer sub-channel for facing the local fixed reception, and after the main broadcast transmitting tower obtains the broadcast service information and the physical layer sub-channel information from the core network, the main broadcast transmitting tower allocates the first physical layer sub-channel to the base layer broadcast service, and the main broadcast transmitting tower allocates the second physical layer sub-channel to the enhancement layer broadcast service.
The main broadcasting transmitting tower generates physical layer sub-channel signals based on the broadcasting signaling information and the broadcasting physical layer sub-channels, and superimposes different physical layer sub-channel signals to generate a main broadcasting transmitting tower broadcasting signal, and transmits the main broadcasting transmitting tower broadcasting signal comprises the following steps:
S201, the main broadcasting transmitting tower codes, modulates and frames the basic layer broadcasting service information according to a broadcasting protocol based on the basic layer broadcasting signaling information, and generates a basic layer broadcasting signal after adapting to a first physical layer sub-channel;
s202, the main broadcast transmitting tower codes, modulates and frames the enhancement layer broadcast service information according to a broadcast protocol based on the enhancement layer broadcast signaling information, and generates an enhancement layer broadcast signal after adapting to a second physical layer sub-channel;
and S203, the main broadcasting transmitting tower generates a main broadcasting transmitting tower broadcasting signal by directly superposing the base layer broadcasting signal and the enhancement layer broadcasting signal, and transmits the main broadcasting transmitting tower broadcasting signal.
Specifically, the generating, by the main broadcasting transmission tower, the main broadcasting transmission tower broadcasting signal by directly superposing the base layer broadcasting signal and the enhancement layer broadcasting signal includes:
the main broadcasting transmitting tower distributes power with the proportion of a to the base layer broadcasting signals based on the broadcasting signaling information, the main broadcasting transmitting tower distributes power with the proportion of 1-a to the enhancement layer broadcasting signals, and the base layer broadcasting signals and the enhancement layer broadcasting signals are directly overlapped to generate the main broadcasting transmitting tower broadcasting signals.
The auxiliary broadcasting transmission tower obtains a transmission signal from the main broadcasting transmission tower, generates an auxiliary broadcasting transmission tower broadcasting signal based on the transmission signal, and transmits the auxiliary broadcasting transmission tower broadcasting signal including:
s301, the auxiliary broadcasting transmitting tower receives the main broadcasting transmitting tower broadcasting signal transmitted by the main broadcasting transmitting tower;
s302, the auxiliary broadcasting transmitting tower generates an auxiliary broadcasting transmitting tower broadcasting signal by adopting an amplifying and forwarding or low-delay decoding and forwarding mode, and transmits the auxiliary broadcasting transmitting tower broadcasting signal.
Specifically, the auxiliary broadcast transmitting tower generates an auxiliary broadcast transmitting tower broadcast signal by adopting a low-delay decoding forwarding mode, and transmits the auxiliary broadcast transmitting tower broadcast signal, which comprises the following steps:
the auxiliary broadcast transmitting tower uses a low-delay decoding method, and completely decodes the main broadcast transmitting tower broadcast signal according to the channel condition of the auxiliary broadcast transmitting tower to obtain the basic layer broadcast service information and the enhancement layer broadcast service information, and the auxiliary broadcast transmitting tower can select to delete the enhancement layer broadcast service information to obtain the whole set or subset of the enhancement layer broadcast service information;
the auxiliary broadcast transmitting tower carries out code modulation on the whole set or subset of the basic layer broadcast service information and the enhancement layer broadcast service information to obtain an auxiliary broadcast transmitting tower broadcast signal;
The auxiliary broadcast transmitting tower transmits the auxiliary broadcast transmitting tower broadcast signal.
Specifically, the auxiliary broadcast transmitting tower generates an auxiliary broadcast transmitting tower broadcast signal by adopting a low-delay decoding forwarding mode, and transmits the auxiliary broadcast transmitting tower broadcast signal, and the method further comprises the following steps:
the auxiliary broadcast transmitting tower uses a low-delay decoding method to partially decode the broadcast signal of the main broadcast transmitting tower according to the channel condition of the auxiliary broadcast transmitting tower and obtain the basic layer broadcast service information;
the auxiliary broadcast transmitting tower carries out code modulation on the basic layer broadcast service information to obtain an auxiliary broadcast transmitting tower broadcast signal;
the auxiliary broadcast transmitting tower transmits the auxiliary broadcast transmitting tower broadcast signal.
In specific implementation, the base layer broadcasting service information obtained by each main broadcasting transmitting tower is the same, the enhancement layer broadcasting service information is different, the main broadcasting transmitting tower A modulates the base layer broadcasting service information So and the enhancement layer broadcasting service information Sa into a base layer broadcasting signal Xo and an enhancement layer broadcasting signal Xa respectively, and the main broadcasting transmitting tower B modulates the base layer broadcasting service information So and the enhancement layer broadcasting service information Sb into a base layer broadcasting signal Xo and an enhancement layer broadcasting signal Xb respectively;
For the main broadcasting transmitting tower A, according to the broadcasting signaling information, the power with the proportion of a is distributed to the base layer broadcasting signal Xo, the power with the proportion of 1-a is distributed to the enhancement layer broadcasting signal Xa, and for the main broadcasting transmitting tower B, the power with the proportion of B is distributed to the base layer broadcasting signal Xo, and the power with the proportion of 1-B is distributed to the enhancement layer broadcasting signal Xb;
the signal transmitted by the A main broadcasting transmitting tower is X1 = (a 1/2) X o+ ((1-a) 1/2) Xa, and the signal transmitted by the B main broadcasting transmitting tower is X2 = (B1/2) X o+ ((1-B) 1/2) Xb.
The auxiliary broadcasting transmitting tower obtains the main broadcasting transmitting tower broadcasting signal of the auxiliary main broadcasting transmitting, and the specific steps are as follows:
the auxiliary broadcasting transmitting tower receives a main broadcasting transmitting tower broadcasting signal X from the main broadcasting transmitting tower;
the auxiliary broadcasting transmitting tower can forward the broadcasting signal X of the main broadcasting transmitting tower based on the amplifying and forwarding method, or the auxiliary broadcasting transmitting tower can obtain the broadcasting service information of the main broadcasting transmitting tower based on the low-delay decoding and forwarding method, the auxiliary broadcasting transmitting tower can completely decode and forward, and can also partially decode and forward, so as to obtain the composite signal X' carrying the broadcasting service information of the basic layer, and the specific steps further comprise:
The auxiliary broadcasting transmitting tower receives a main broadcasting transmitting tower broadcasting signal X from the main broadcasting transmitting tower;
the auxiliary broadcast transmitting tower A1 obtains a composite signal X1 of a plurality of physical layer channels of the main broadcast transmitting tower based on amplification and forwarding;
the auxiliary broadcast transmitting tower uses a low-delay decoding method, and X can be completely decoded or partially decoded according to channel conditions;
for the complete decoding method, the A0 auxiliary broadcast transmitting tower obtains composite information S=S0+Sa of the main broadcast transmitting tower broadcast service based on the complete decoding method, and can delete the enhancement layer broadcast service information according to the need to obtain the whole set or subset of the base layer broadcast service information and the enhancement layer broadcast service information;
for the partial decoding method, the B0 auxiliary broadcast transmitting tower obtains a broadcast signal X ', X' carrying base layer broadcast service information based on the partial decoding method, and can be regarded as a base layer broadcast signal X0 plus interference;
after the A0 auxiliary broadcast transmitting tower performs complete decoding, performing code modulation on the pruned service information to obtain a signal X;
the auxiliary broadcast transmitting towers transmit auxiliary broadcast transmitting tower broadcast signals, the base layer broadcast signals facing the handheld terminal in the auxiliary broadcast transmitting tower transmit signals are consistent, and the enhancement layer broadcast signals facing the local fixed reception of the auxiliary broadcast transmitting tower transmit signals are the whole set or subset of the auxiliary main broadcast transmitting tower enhancement layer broadcast signals.
At this time, although the signals transmitted between the main broadcasting transmission towers and between the auxiliary broadcasting transmission towers and the main broadcasting transmission towers are different, the signals can be regarded as base layer signals x0+n (interference) by the receiving end of the handheld terminal, and the signals of the enhancement layers of other transmission towers can be regarded as interference and decoded during decoding. And because of the low latency of amplification forwarding and low latency decoding forwarding, the signal transmitting modes of the main broadcasting transmitting tower and the auxiliary broadcasting transmitting tower can be regarded as simultaneous same-frequency transmission, thereby forming a novel heterogeneous single-frequency network.
Embodiment two:
the second embodiment differs from the first embodiment in that the main broadcasting transmission tower generates a main broadcasting transmission tower broadcasting signal by using a nonlinear superposition manner for a base layer broadcasting signal and an enhancement layer broadcasting signal, and transmits the main broadcasting transmission tower broadcasting signal, and the method includes the following steps:
s201, the main broadcasting transmitting tower adopts a nonlinear superposition mode to modulate a base layer broadcasting signal and an enhancement layer broadcasting signal into a composite signal, and the composite signal is used as a main broadcasting transmitting tower broadcasting signal.
The auxiliary broadcast transmitting tower obtains a transmission signal from a core network, generates an auxiliary broadcast transmitting tower broadcast signal based on the transmission signal, and transmits the auxiliary broadcast transmitting tower broadcast signal, comprising the following steps:
S301, the auxiliary broadcast transmitting tower obtains the same physical layer sub-channel information and broadcast service information as the corresponding main broadcast transmitting tower from a core network;
s302, the auxiliary broadcast transmitting tower encodes, modulates and frames the basic layer broadcast service information according to a broadcast protocol, and generates a basic layer broadcast signal after adapting to a first physical layer sub-channel;
s303, the auxiliary broadcast transmitting tower selects the enhancement layer broadcast service information or part of enhancement layer broadcast service information to encode, modulate and frame according to a broadcast protocol, and generates enhancement layer broadcast signals of the auxiliary broadcast transmitting tower after being adapted to a second physical layer sub-channel;
s304, the auxiliary broadcast transmitting tower transmits the basic layer broadcast signal as an auxiliary broadcast transmitting tower broadcast signal or the auxiliary broadcast transmitting tower superimposes the basic layer broadcast signal and the enhancement layer broadcast signal of the auxiliary broadcast transmitting tower to generate an auxiliary broadcast transmitting tower broadcast signal, and transmits the auxiliary broadcast transmitting tower broadcast signal.
The nonlinear superposition method is a MUST_Type2 method or a bit division multiplexing method.
In specific implementation, the main broadcasting transmitting tower modulates the base layer broadcasting signal and the enhancement layer broadcasting signal into a composite signal in a nonlinear superposition mode, and the specific steps are as follows:
For the main broadcasting transmitting tower A, the basic layer broadcasting service information S0 and the enhancement layer broadcasting service information Sa are modulated into a composite signal X (0, a) by a nonlinear superposition (BDM) method, and for the main broadcasting transmitting tower B, the basic layer broadcasting service information S0 and the enhancement layer broadcasting service information Sb are modulated into the composite signal X (0, B) by the BDM method;
the main broadcasting transmitting tower A, B transmits signals.
The main broadcasting transmitting tower A is the same as the basic layer broadcasting service information of the main broadcasting transmitting tower B, and the enhancement layer broadcasting service information is different.
The auxiliary broadcast transmitting tower obtains a transmission signal from a core network, and comprises the following specific steps:
the auxiliary broadcast transmitting towers A1 and B1 acquire physical layer sub-channel information and broadcast service information from a core network;
the auxiliary broadcast transmitting tower encodes, modulates and frames the basic layer broadcast service information according to a broadcast protocol, and generates a basic layer broadcast signal after adapting to a first physical layer sub-channel;
the auxiliary broadcast transmitting tower selects the enhancement layer broadcast service information or part of enhancement layer broadcast service information according to the requirement, codes, modulates and frames according to a broadcast protocol, and generates enhancement layer broadcast signals of the auxiliary broadcast transmitting tower after being adapted to a second physical layer sub-channel;
The auxiliary broadcast transmitting tower transmits the basic layer broadcast signal as an auxiliary broadcast transmitting tower broadcast signal or the auxiliary broadcast transmitting tower superimposes the basic layer broadcast signal and the enhancement layer broadcast signal of the auxiliary broadcast transmitting tower to generate an auxiliary broadcast transmitting tower broadcast signal and transmits the auxiliary broadcast transmitting tower broadcast signal.
At this time, although different signals exist in the signals transmitted between the main broadcasting transmission towers and between the auxiliary broadcasting transmission towers and the main broadcasting transmission towers, the signals can be regarded as base layer signals X0+N (interference) by the receiving end of the handheld terminal, so that a novel heterogeneous single-frequency network is formed.
Embodiment III:
the difference between the third embodiment and the first and second embodiments is that the source of the signal received by the auxiliary broadcast transmitting tower is a core network or a main broadcast transmitting tower, and the auxiliary broadcast transmitting tower works in a mode of completely/partially decoding and forwarding the auxiliary broadcast transmitting tower A0/B0; the auxiliary broadcast transmitting tower A1/B1 is connected with a core network; the auxiliary broadcast transmitting tower A2/B2 amplifies and forwards; the physical layer sub-channel superposition mode of the main broadcast transmitting tower is as follows: directly superposing the main broadcasting transmitting tower A and non-linearly superposing the main broadcasting transmitting tower B;
in specific implementation, the broadcast transmitting tower A adopts a nonlinear superposition mode to modulate the base layer broadcast signal and the enhancement layer broadcast signal into a composite signal, which comprises;
The main broadcasting transmitting tower A modulates the base layer broadcasting service information So and the enhancement layer broadcasting service information Sa into a base layer broadcasting signal Xo and an enhancement layer broadcasting signal Xa respectively;
for the main broadcasting transmitting tower A, according to signaling information, the power with the proportion of a is distributed to the base layer broadcasting signals, and the power with the proportion of 1-a is distributed to the enhancement layer broadcasting signals;
the signal transmitted by the A main broadcasting transmitting tower is x1= (a 1/2) xo+ ((1-a) 1/2) Xa.
The modulating the base layer broadcast signal and the enhancement layer broadcast signal into the composite signal by the broadcast transmitting tower B in a nonlinear superposition mode comprises the following steps:
modulating the base layer broadcasting service information So and the enhancement layer broadcasting service information Sb into a composite signal X (o, b) by using a nonlinear superposition method;
the signal transmitted by the main broadcasting transmission tower B is x2=x (o, B).
The base layer broadcasting service information of the broadcasting transmitting tower A and the base layer broadcasting service information of the broadcasting transmitting tower B are the same, and the enhancement layer broadcasting service information is different.
The auxiliary broadcast transmitting tower A0 receives a main broadcast transmitting tower broadcast signal X1 from the main broadcast transmitting tower, and the auxiliary broadcast transmitting tower A0 can completely decode or partially decode the X1 according to channel conditions by using a low-delay decoding method;
the auxiliary broadcast transmitting tower A1 obtains a transmission signal from a core network;
The auxiliary broadcast transmitting tower A2 obtains a transmission signal X1 from an auxiliary main broadcast transmitting tower, and the auxiliary broadcast transmitting tower A2 adopts an amplifying and forwarding method;
the auxiliary broadcasting transmitting tower B0 obtains a transmission signal X2 from an auxiliary main broadcasting transmitting tower, and the auxiliary broadcasting transmitting tower B0 adopts an amplifying and forwarding method or the auxiliary broadcasting transmitting tower B0 can obtain main broadcasting transmitting tower broadcasting service information based on a low-delay decoding and forwarding method;
the auxiliary broadcast transmitting tower B0 receives signals from the auxiliary broadcast transmitting tower;
the secondary broadcast transmitting tower B1 obtains a transmission signal from the core network.
The base layer broadcast signals facing the handheld terminal in the auxiliary broadcast transmitting tower transmission signals are consistent, and the enhancement layer broadcast signals facing the local fixed reception in the auxiliary broadcast transmitting tower transmission signals are the whole set or subset of the auxiliary main broadcast transmitting tower enhancement layer broadcast signals.
At this time, although the signals transmitted between the main broadcasting transmission towers and between the auxiliary broadcasting transmission towers and the main broadcasting transmission towers are different, the signals can be regarded as the base layer signal xo+N (interference) by the receiving end of the handheld terminal, and for the auxiliary broadcasting transmission towers which are not connected with the core network, the signal modes transmitted by the main broadcasting transmission towers and the auxiliary broadcasting transmission towers can be regarded as simultaneous same-frequency transmission due to low time delay of amplification forwarding and low time delay decoding forwarding, so that a single-frequency networking is formed.
Embodiment four:
for the main broadcasting transmitting tower A, the basic layer broadcasting service information S0 and the enhancement layer broadcasting service information Sa are modulated into a composite signal X (0, a) by a BDM method, and for the main broadcasting transmitting tower B, the basic layer broadcasting service information S0 and the enhancement layer broadcasting service information Sa are modulated into the composite signal X (0, a) by the BDM method; the main broadcasting transmitting tower A, B transmits signals.
The base layer broadcast service information of each main broadcast transmitting tower is the same, and the enhancement layer broadcast service information is the same.
The auxiliary broadcast transmitting tower obtains a transmission signal from a core network, and the method specifically comprises the following steps:
the auxiliary broadcast transmitting towers A1 and B1 acquire physical layer sub-channel information and broadcast service information from a core network;
s2, an auxiliary broadcast transmitting tower A1 transmits an auxiliary base layer broadcast signal and an auxiliary enhancement layer broadcast signal subset of a main broadcast transmitting tower A, and an auxiliary broadcast transmitting tower B1 transmits a base layer broadcast signal adopted by a base layer broadcast signal of a main broadcast transmitting tower B;
at this time, the signals between the main broadcasting transmitting towers are the same, and the signals between the auxiliary broadcasting transmitting towers are different, but the signals can be regarded as the base layer signals X0+N (interference) by the receiving end of the handheld terminal, thereby forming a novel heterogeneous single-frequency network. In summary, the differences between the first embodiment and the fourth embodiment are as follows:
Based on the novel broadcast single-frequency network networking method, the embodiment provides a novel broadcast single-frequency network networking system, which comprises the following steps:
the system comprises a core network 1, at least one main broadcasting transmission tower 2 and at least one auxiliary broadcasting transmission tower 3, wherein each main broadcasting transmission tower 2 corresponds to each auxiliary broadcasting transmission tower 3, the main broadcasting transmission tower 2 is connected with the core network 1, and the auxiliary broadcasting transmission tower 3 can be connected with the corresponding main broadcasting transmission tower 2 or the auxiliary broadcasting transmission tower 3 is connected with the core network 1;
the main broadcast transmitting tower 2 is configured to obtain broadcast service information and physical layer subchannel information from the core network 1, allocate a corresponding broadcast physical layer subchannel for a broadcast service based on broadcast signaling information in the broadcast service information and the broadcast physical layer subchannel information, generate a physical layer subchannel signal based on the broadcast signaling information and the broadcast physical layer subchannel, superimpose different physical layer subchannel signals to generate a main broadcast transmitting tower broadcast signal, and transmit the main broadcast transmitting tower broadcast signal;
the auxiliary broadcasting tower 3 is configured to obtain a transmission signal from the main broadcasting tower 2 or the core network 1, generate an auxiliary broadcasting tower broadcast signal based on the transmission signal, and transmit the auxiliary broadcasting tower broadcast signal.
In addition, it should be noted that the working process of the novel broadcast single frequency network networking system provided in this embodiment is the same as the working process of the novel broadcast single frequency network networking method, and specific reference may be made to the working process of the novel broadcast single frequency network networking method, which will not be described herein.
Based on the above-described novel broadcast single-frequency network networking method, the present embodiment provides a computer-readable storage medium storing one or more programs executable by one or more processors to implement the steps in the novel broadcast single-frequency network networking method as described in the above-described embodiment.
As shown in fig. 2, based on the above-mentioned novel broadcast single frequency network networking method, the present application also provides a terminal device, which includes at least one processor (processor) 20; a display screen 21; and a memory (memory) 22, which may also include a communication interface (Communications Interface) 23 and a bus 24. Wherein the processor 20, the display 21, the memory 22 and the communication interface 23 may communicate with each other via a bus 24. The display screen 21 is configured to display a user guidance interface preset in the initial setting mode. The communication interface 23 may transmit information. The processor 20 may invoke logic instructions in the memory 22 to perform the methods of the embodiments described above.
Further, the logic instructions in the memory 22 described above may be implemented in the form of software functional units and stored in a computer readable storage medium when sold or used as a stand alone product.
The memory 22, as a computer readable storage medium, may be configured to store a software program, a computer executable program, such as program instructions or modules corresponding to the methods in the embodiments of the present disclosure. The processor 20 performs functional applications and data processing, i.e. implements the methods of the embodiments described above, by running software programs, instructions or modules stored in the memory 22.
The memory 22 may include a storage program area that may store an operating system, at least one application program required for functions, and a storage data area; the storage data area may store data created according to the use of the terminal device, etc. In addition, the memory 22 may include high-speed random access memory, and may also include nonvolatile memory. For example, a plurality of media capable of storing program codes such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or a transitory storage medium may be used.
Compared with the prior art, the novel broadcast single-frequency network networking method comprises the steps that the main broadcast transmitting tower obtains broadcast service information and physical layer sub-channel information from the core network, and the main broadcast transmitting tower distributes corresponding broadcast physical layer sub-channels for broadcast services based on broadcast signaling information in the broadcast service information and the broadcast physical layer sub-channel information, wherein the broadcast service information comprises base layer broadcast service information and enhancement layer broadcast service information, the base layer broadcast service information obtained by different main broadcast transmitting towers is consistent, and the enhancement layer broadcast service information obtained by different main broadcast transmitting towers can be inconsistent; the main broadcasting transmitting tower generates physical layer sub-channel signals based on the broadcasting signaling information and the broadcasting physical layer sub-channels, superimposes different physical layer sub-channel signals to generate main broadcasting transmitting tower broadcasting signals, and transmits the main broadcasting transmitting tower broadcasting signals; the auxiliary broadcast transmitting tower obtains a transmission signal from the main broadcast transmitting tower or a core network, generates an auxiliary broadcast transmitting tower broadcast signal based on the transmission signal, and transmits the auxiliary broadcast transmitting tower broadcast signal; by adopting the method, the heterogeneous fusion and the joint networking can be carried out among a plurality of broadcast transmitting towers, so that the differentiated service of the broadcast service and the improvement of the deep coverage of the handheld terminal are realized.
The novel broadcast single-frequency networking in the invention can lead the enhancement layer signals among different main broadcast transmitting towers to be inconsistent, thereby realizing the function of transmitting different signals at the same time and the same frequency, namely, the signal isomerization. In a network consisting of a primary broadcast transmitting tower and a secondary broadcast transmitting tower, although the towers simultaneously transmit signals which are not necessarily the same frequency, a single frequency network can be still constructed because the towers can be regarded as base layer signal plus interference at a handheld receiving terminal.
The auxiliary broadcasting transmitting tower has two methods for transmitting signals, one is connected to the core network, the other is used for receiving and forwarding signals of the main broadcasting transmitting tower, and two methods of decoding forwarding and amplifying forwarding are adopted when the signals of the main broadcasting transmitting tower are received, so that the coverage rate of the handheld terminal is enhanced.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.

Claims (12)

1. A novel broadcast single frequency network networking method, characterized in that it is applied to a novel broadcast single frequency network networking system, the system includes a core network, at least one main broadcast transmitting tower and at least one auxiliary broadcast transmitting tower, each main broadcast transmitting tower corresponds to each auxiliary broadcast transmitting tower, the method includes:
The main broadcasting transmitting tower obtains broadcasting service information and physical layer sub-channel information from the core network, and allocates corresponding broadcasting physical layer sub-channels for broadcasting services based on broadcasting signaling information in the broadcasting service information and the broadcasting physical layer sub-channel information, wherein the broadcasting service information comprises basic layer broadcasting service information and enhancement layer broadcasting service information, the basic layer broadcasting service information obtained by different main broadcasting transmitting towers is consistent, and the enhancement layer broadcasting service information obtained by different main broadcasting transmitting towers can be inconsistent;
the main broadcasting transmitting tower generates physical layer sub-channel signals based on the broadcasting signaling information and the broadcasting physical layer sub-channels, superimposes different physical layer sub-channel signals to generate main broadcasting transmitting tower broadcasting signals, and transmits the main broadcasting transmitting tower broadcasting signals;
the auxiliary broadcast transmitting tower obtains a transmission signal from the main broadcast transmitting tower or a core network, generates an auxiliary broadcast transmitting tower broadcast signal based on the transmission signal, and transmits the auxiliary broadcast transmitting tower broadcast signal;
the main broadcasting transmitting tower generates physical layer sub-channel signals based on the broadcasting signaling information and the broadcasting physical layer sub-channels, and superimposes different physical layer sub-channel signals to generate a main broadcasting transmitting tower broadcasting signal, and transmitting the main broadcasting transmitting tower broadcasting signal includes:
The main broadcasting transmitting tower encodes, modulates and frames the base layer broadcasting service information according to a broadcasting protocol based on the base layer broadcasting signaling information, and generates a base layer broadcasting signal after being adapted to a first physical layer sub-channel;
the main broadcasting transmitting tower encodes, modulates and frames the enhancement layer broadcasting service information according to a broadcasting protocol based on the enhancement layer broadcasting signaling information, and generates an enhancement layer broadcasting signal after being adapted to a second physical layer sub-channel;
and the main broadcasting transmitting tower generates a main broadcasting transmitting tower broadcasting signal by adopting a direct superposition or nonlinear superposition mode for the base layer broadcasting signal and the enhancement layer broadcasting signal, and transmits the main broadcasting transmitting tower broadcasting signal.
2. The method of claim 1, wherein the main broadcasting transmission tower obtains broadcasting service information and physical layer sub-channel information from the core network, and the main broadcasting transmission tower allocates corresponding broadcasting physical layer sub-channels for broadcasting services based on broadcasting signaling information in the broadcasting service information and the broadcasting physical layer sub-channel information, comprising:
the main broadcast transmitting tower obtains broadcast service information and physical layer sub-channel information from the core network, wherein the physical layer sub-channel information comprises a first physical layer sub-channel for facing a handheld terminal and a second physical layer sub-channel for facing local fixed reception;
The main broadcast transmitting tower allocates a corresponding broadcast physical layer sub-channel for the broadcast service based on the broadcast signaling information and the broadcast physical layer sub-channel information in the broadcast service information, wherein the broadcast signaling information comprises base layer broadcast signaling information and enhancement layer broadcast signaling information, the base layer broadcast signaling information corresponds to the base layer broadcast service, the enhancement layer broadcast signaling information corresponds to the enhancement layer broadcast service, the main broadcast transmitting tower allocates a first physical layer sub-channel for the base layer broadcast service, and the main broadcast transmitting tower allocates a second physical layer sub-channel for the enhancement layer broadcast service.
3. The method of claim 1, wherein the generating the main broadcast transmitting tower broadcast signal by the main broadcast transmitting tower by directly overlapping the base layer broadcast signal and the enhancement layer broadcast signal comprises:
the main broadcasting transmitting tower distributes power with the proportion of a to the base layer broadcasting signals based on the broadcasting signaling information, the main broadcasting transmitting tower distributes power with the proportion of 1-a to the enhancement layer broadcasting signals, and the base layer broadcasting signals and the enhancement layer broadcasting signals are directly overlapped to generate the main broadcasting transmitting tower broadcasting signals.
4. The method of claim 1, wherein the main broadcasting transmission tower generates a main broadcasting transmission tower broadcasting signal by a nonlinear superposition manner of a base layer broadcasting signal and an enhancement layer broadcasting signal, and transmitting the main broadcasting transmission tower broadcasting signal comprises:
the main broadcasting transmitting tower adopts a nonlinear superposition mode to modulate the base layer broadcasting signal and the enhancement layer broadcasting signal into a composite signal, and the composite signal is used as the main broadcasting transmitting tower broadcasting signal.
5. The novel broadcast single frequency network networking method of claim 1, wherein the auxiliary broadcast transmitting tower obtains a transmission signal from the main broadcast transmitting tower, the auxiliary broadcast transmitting tower generates an auxiliary broadcast transmitting tower broadcast signal based on the transmission signal, and transmitting the auxiliary broadcast transmitting tower broadcast signal comprises:
the auxiliary broadcasting transmitting tower receives the main broadcasting transmitting tower broadcasting signal transmitted by the main broadcasting transmitting tower;
the auxiliary broadcast transmitting tower generates an auxiliary broadcast transmitting tower broadcast signal by adopting an amplifying and forwarding or low-delay decoding and forwarding mode, and transmits the auxiliary broadcast transmitting tower broadcast signal.
6. The method of claim 1, wherein the auxiliary broadcasting tower obtains a transmission signal from a core network, the auxiliary broadcasting tower generates an auxiliary broadcasting tower broadcasting signal based on the transmission signal, and transmitting the auxiliary broadcasting tower broadcasting signal comprises:
the auxiliary broadcast transmitting tower obtains the same physical layer sub-channel information and broadcast service information as the corresponding main broadcast transmitting tower from a core network;
the auxiliary broadcast transmitting tower encodes, modulates and frames the basic layer broadcast service information according to a broadcast protocol, and generates a basic layer broadcast signal after adapting to a first physical layer sub-channel;
the auxiliary broadcast transmitting tower selects the enhancement layer broadcast service information or part of enhancement layer broadcast service information to encode, modulate and frame according to a broadcast protocol, and generates enhancement layer broadcast signals of the auxiliary broadcast transmitting tower after being adapted to a second physical layer sub-channel;
the auxiliary broadcast transmitting tower transmits the basic layer broadcast signal as an auxiliary broadcast transmitting tower broadcast signal or the auxiliary broadcast transmitting tower superimposes the basic layer broadcast signal and the enhancement layer broadcast signal of the auxiliary broadcast transmitting tower to generate an auxiliary broadcast transmitting tower broadcast signal and transmits the auxiliary broadcast transmitting tower broadcast signal.
7. The method of claim 5, wherein the generating the auxiliary broadcast transmitting tower broadcast signal by the auxiliary broadcast transmitting tower in a low-delay decoding forwarding mode, and transmitting the auxiliary broadcast transmitting tower broadcast signal comprises:
the auxiliary broadcast transmitting tower uses a low-delay decoding method, and completely decodes the main broadcast transmitting tower broadcast signal according to the channel condition of the auxiliary broadcast transmitting tower to obtain the basic layer broadcast service information and the enhancement layer broadcast service information, and the auxiliary broadcast transmitting tower can select to delete the enhancement layer broadcast service information to obtain the whole set or subset of the enhancement layer broadcast service information;
the auxiliary broadcast transmitting tower carries out code modulation on the whole set or subset of the basic layer broadcast service information and the enhancement layer broadcast service information to obtain an auxiliary broadcast transmitting tower broadcast signal;
the auxiliary broadcast transmitting tower transmits the auxiliary broadcast transmitting tower broadcast signal.
8. The method of claim 5, wherein the generating the auxiliary broadcast transmitting tower broadcast signal by the auxiliary broadcast transmitting tower in a low-delay decoding forwarding mode, and transmitting the auxiliary broadcast transmitting tower broadcast signal comprises:
The auxiliary broadcast transmitting tower uses a low-delay decoding method to partially decode the broadcast signal of the main broadcast transmitting tower according to the channel condition of the auxiliary broadcast transmitting tower and obtain the basic layer broadcast service information;
the auxiliary broadcast transmitting tower carries out code modulation on the basic layer broadcast service information to obtain an auxiliary broadcast transmitting tower broadcast signal;
the auxiliary broadcast transmitting tower transmits the auxiliary broadcast transmitting tower broadcast signal.
9. The novel broadcast single frequency network networking method according to claim 1, wherein the nonlinear superposition method is a mud_type 2 method or a bit division multiplexing method.
10. The novel broadcast single-frequency network networking system is characterized by comprising a core network, at least one main broadcast transmitting tower and at least one auxiliary broadcast transmitting tower, wherein each main broadcast transmitting tower corresponds to each auxiliary broadcast transmitting tower, the main broadcast transmitting tower is connected with the core network, and the auxiliary broadcast transmitting tower can be connected with the corresponding main broadcast transmitting tower or the auxiliary broadcast transmitting tower is connected with the core network;
the main broadcast transmitting tower is used for acquiring broadcast service information and physical layer sub-channel information from the core network, and distributing corresponding broadcast physical layer sub-channels for broadcast services based on broadcast signaling information in the broadcast service information and the broadcast physical layer sub-channel information, wherein the broadcast service information comprises base layer broadcast service information and enhancement layer broadcast service information, the base layer broadcast service information acquired by different main broadcast transmitting towers is consistent, and the enhancement layer broadcast service information acquired by different main broadcast transmitting towers can be inconsistent; generating physical layer sub-channel signals based on the broadcast signaling information and the broadcast physical layer sub-channels, superposing different physical layer sub-channel signals to generate a main broadcast transmitting tower broadcast signal, and transmitting the main broadcast transmitting tower broadcast signal; the main broadcasting transmitting tower encodes, modulates and frames the base layer broadcasting service information according to a broadcasting protocol based on the base layer broadcasting signaling information, and generates a base layer broadcasting signal after being adapted to a first physical layer sub-channel; the main broadcasting transmitting tower encodes, modulates and frames the enhancement layer broadcasting service information according to a broadcasting protocol based on the enhancement layer broadcasting signaling information, and generates an enhancement layer broadcasting signal after being adapted to a second physical layer sub-channel;
The main broadcasting transmitting tower generates a main broadcasting transmitting tower broadcasting signal by adopting a direct superposition or nonlinear superposition mode for a base layer broadcasting signal and an enhancement layer broadcasting signal, and transmits the main broadcasting transmitting tower broadcasting signal;
the auxiliary broadcast transmitting tower is used for obtaining a transmission signal from the main broadcast transmitting tower or the core network, generating an auxiliary broadcast transmitting tower broadcast signal based on the transmission signal, and transmitting the auxiliary broadcast transmitting tower broadcast signal.
11. A computer readable storage medium storing one or more programs executable by one or more processors to implement the steps in the novel broadcast single frequency network networking method of any of claims 1-9.
12. A terminal device, comprising: a processor, a memory, and a communication bus, the memory having stored thereon a computer readable program executable by the processor;
the communication bus realizes connection communication between the processor and the memory;
the processor, when executing the computer readable program, implements the steps of the novel broadcast single frequency network networking method according to any of claims 1-9.
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